The vast six-bedroom mansion was inspired by the clifftop villas that overlook Italy’s Lake Como.

Knight Frank’s Deborah Cullen, who was the latest in a long line of listing agents over the years, declined to reveal the sale price, but preliminary records have put the result at $8.2 million.

The Southern Highlands record high has remained unbroken since 2007 when the 200-hectare Sutton Forest property Comfort Hill was sold for $15 million to the late Reg Grundy.

The Alvaros’ opulent 20-room mansion was inspired by the villas that line the clifftops of Bellagio overlooking Lake Como in Italy, with the Alvaros including the construction of a lake in the design to give the Bowral property a seaside feel.

The six-bedroom, seven-bathroom residence with a commercial-grade kitchen, separate caterer’s kitchen, self-contained guest accommodation, two cellars, a library and 10-car garage was completed in 2008.

Six years later it was listed with initial hopes of $12 million that were reduced to $10 million early last year.

Collette Dinnigan sold Springfield Farm for $7.25 million earlier this year.